JP6450228B2 - Seismic retrofitting method for large wall and seismic retrofitting method for large wall - Google Patents

Description

The present invention relates to a true wall of retrofitting methods and Daikabe of retrofitting methods to improve seismic performance.

  In buildings, seismic performance is widely recognized as an important element of buildings, and new buildings are built to meet the seismic standards at the time of construction. In addition, for existing buildings constructed based on the standards of the old system, renovation work will be performed to improve the seismic performance so as to meet the current standards.

  For example, in an existing building where interior materials such as gypsum board are placed on the indoor side of the pillars of the building, seismic retrofit where a reinforcing sheet including aramid fiber sheets for seismic reinforcement is screwed into the pillar through the interior material with fastening screws A wall has been proposed (see Patent Document 1 below).

JP2013-139698A

However, in the seismic retrofit wall described in Patent Document 1 described above, since the reinforcing sheet and the finished interior material are further arranged on the indoor side of the existing interior material arranged on the indoor side of the column, these reinforcing sheets In addition, there is a problem that the indoor space becomes narrow by the thickness of the finished interior material.
Further, in a so-called true-wall specification building in which the existing interior material is arranged outside the indoor side surface of the column, there is no vertical material such as a stud that supports the interior material on the side of the column. For this reason, in order to fix the finish interior material to the pillar, the finish interior material may be arranged to be disposed along the surface on the indoor side of the pillar. Also in this case, there is a problem that the finished interior material is disposed on the indoor side of the pillar, and the indoor space becomes narrow.

The present invention has been made in view of the above circumstances, while ensuring the interior space, the attachment of the reinforcing sheet to provide a true wall of retrofitting methods and Daikabe of retrofitting methods possible.

  Further, the true wall seismic retrofit method according to the present invention includes a vertical member that forms a casing and an existing wall member fixed to the vertical member, and the existing wall member is on the indoor side of the vertical member in plan view. A seismic retrofitting method for a true wall disposed between the surface of the vertical member and the outdoor side surface of the vertical member, wherein the existing wall member is removed, a vertical support member is fixed to a side of the vertical member, and the vertical member is fixed. A base wall material and a reinforcing sheet are provided on the indoor side of the receiving member, and the reinforcing sheet is fixed to the vertical receiving member by a fixture, and the inner side of the reinforcing sheet and the indoor side surface of the vertical member are A finishing wall material is provided on the outdoor side.

  In the seismic retrofit method for the true wall constructed in this way, the existing wall material is removed, the vertical support material is fixed to the side of the vertical material, and the base wall material and the reinforcing sheet are provided on the indoor side of the vertical support material. The reinforcing sheet can be attached by fixing the reinforcing sheet to the vertical support member with a fixture. Moreover, since the finishing wall material is provided on the outdoor side of the surface of the vertical member on the indoor side, the finishing wall member does not protrude to the indoor side of the vertical member. Therefore, the reinforcing sheet can be attached while securing the indoor space.

  The large wall seismic retrofitting method according to the present invention includes a longitudinal member that forms a casing and an existing wall member fixed to the longitudinal member, and the existing wall member is a chamber of the longitudinal member in plan view. An earthquake-proof repair method for a large wall arranged along an inner surface, wherein the existing wall material is removed, a vertical support member is fixed to a side of the vertical member, and a base is provided on the indoor side of the vertical support member. A wall material and a reinforcing sheet are provided, the reinforcing sheet is fixed to the vertical receiving material by a fixture, and a finishing wall material is provided along the indoor side surface of the reinforcing sheet and the indoor side surface of the vertical material. And

  In the seismic retrofit method of the large wall configured in this way, the existing wall material is removed, the vertical support material is fixed to the side of the vertical material, and the base wall material and the reinforcing sheet are provided on the indoor side of the vertical support material, The reinforcing sheet can be attached by fixing the reinforcing sheet to the vertical support member with a fixture. Moreover, since the finishing wall material is arranged along the surface on the indoor side of the vertical member, similarly to the existing wall material before the renovation, it is possible to ensure the same indoor space as before the refurbishment. In addition, when the finished wall material after refurbishment and the existing wall material before refurbishment are arranged adjacent to each other, the finished wall material and the existing wall material are arranged on the same plane. Does not occur, and it can be a good fit.

According to the true wall of retrofitting methods and Daikabe of retrofitting methods engagement Ru in the present invention, while securing the interior space, it is possible to attach the reinforcing sheet.

It is a horizontal sectional view which shows the wall structure of the true wall before repair. It is the perspective view which fractured | ruptured a part which shows the earthquake-proof repair wall structure of the true wall which concerns on 1st embodiment of this invention. It is a horizontal sectional view showing a true-wall seismic retrofit wall structure according to the first embodiment of the present invention. It is a perspective view explaining the earthquake-proof repair method of the true wall which concerns on 1st embodiment of this invention. It is a horizontal sectional view showing the earthquake-proof repair wall structure concerning the modification of the first embodiment of the present invention. It is a horizontal sectional view which shows the wall structure of the large wall before repair. It is a horizontal sectional view which shows the earthquake-resistant repair wall structure of the large wall which concerns on 2nd embodiment of this invention. It is a horizontal sectional view which shows the earthquake-proof repair wall structure which concerns on the modification of 2nd embodiment of this invention. It is a perspective view which shows the example of application of the earthquake-proof repair wall structure which concerns on this invention.

(First embodiment)
Hereinafter, the earthquake-resistant repair wall of a building will be described as an example of the earthquake-proof repair wall structure according to the first embodiment of the present invention.
First, the building before renovation will be described.
FIG. 1 is a horizontal sectional view showing a wall structure of a true wall before renovation.
As shown in FIG. 1, the existing wall K of the building before renovation is made up of pillars (vertical members) 3 and studs (vertical members) 4 that form a box, and interior materials (hereinafter referred to as the pillars 3 and 4). , Referred to as “existing interior material”) (existing wall material) 10. In addition, outside walls (not shown) are provided outside the columns 3 and the inter-columns 4.

  The existing interior material 10 is arranged along the indoor side surface 4 of the stud 4. The building of the present embodiment is a so-called true-wall specification building in which the existing interior material 10 is disposed between the indoor-side surface 3a and the outdoor-side surface 3c of the pillar 3 in plan view. The existing interior material 10 is made of, for example, a gypsum board.

FIG. 2 is a partially cutaway perspective view showing the true-wall earthquake-proofing wall structure according to the first embodiment of the present invention. FIG. 3 is a horizontal sectional view showing a true-wall earthquake-resistant repair wall structure according to the first embodiment of the present invention.
As shown in FIG. 2 and FIG. 3, when the existing wall K shown above is renovated to improve the seismic performance, the seismic renovation wall 1 includes the columns 3 and 4, and the side surface 3 b of the column 3. A vertical support member 5 provided on the interior, a base interior material (wall material, base wall material) 11 provided on the indoor side of the vertical support member 5, and a reinforcing sheet provided on the indoor side of the base interior material 11 12 and a new interior material (finishing wall material) 18.

  The vertical support member 5 is a long member formed in a substantially rectangular shape in cross-sectional view. In the present embodiment, LVL (Laminated Veneer Lumber, single-layer laminated material) is used as the vertical support member 5. Further, as the vertical support member 5, in addition to LVL, solid wood, plywood, resin, metal or the like is employed.

  The vertical support member 5 is fixed to the side surface 3 b of the column 3 with an attachment screw 6. The vertical receiving member 5 is provided with a plurality of pilot holes 5a with a space in the wall thickness direction and the vertical direction of the earthquake-proof repair wall 1. A mounting screw 6 is inserted into the lower hole 5 a and is screwed into the column 3. Thereby, the vertical support member 5 functions as a member having a yield strength. In this embodiment, L150 screws are used as the mounting screws 6.

  The base interior material 11 is made of, for example, a gypsum board. The base interior material 11 is disposed along the indoor side surface 4 b of the stud 4 and the indoor side surface 5 b of the vertical receiving member 5. That is, the base interior material 11 is arranged at the same position as the existing interior material 10 before the repair.

  The reinforcing sheet 12 is composed of, for example, an aramid fiber sheet or the like, and is a plate-like or sheet-like member. As will be described later, the reinforcing sheet 12 is fixed to the spacer 4 and the vertical support member 5 through the interior material for the base, thereby improving the strength of the building and increasing the seismic strength. The material of the reinforcing sheet 12 is not limited as long as the seismic strength can be increased. However, as a characteristic, the reinforcing sheet 12 is a plate-like or sheet-like member satisfying at least one of a tensile strength of 2 GPa or more and an elastic modulus of 50 GPa or more. Is preferred.

More specifically, the reinforcing sheet 12 preferably includes a fiber sheet. Among them, a high-strength fiber (sometimes referred to as “high-strength / high-modulus fiber”) sheet is more preferable. According to this, it is lightweight and can obtain high strength.
Further, the reinforcing sheet 12 is preferably formed in a flat plate shape or a sheet shape as a whole by embedding a fiber sheet or a high-strength fiber sheet in a material containing various resins such as an adhesive or a resin. Thereby, when attaching the reinforcement sheet 12 to the interior material 11 for foundation | substrate, generation | occurrence | production of a wrinkle, a twist, etc. of a fiber sheet can be prevented, and a highly uniform construction can be performed.
Accordingly, the workability of the construction is improved, so that the construction period can be shortened.

  The high-strength fiber sheet used for the reinforcing sheet 12 is not particularly limited. For example, a glass fiber sheet, a carbon fiber sheet, an aramid fiber sheet, a sheet prepared by arranging prepregs of fibers, and a multifilament strand are woven. Fiber sheet, polypropylene fiber sheet, polyester fiber sheet, tarpaulin, resin-impregnated carbon fiber sheet, resin-impregnated aramid fiber sheet, resin-impregnated glass fiber sheet, ultrahigh molecular weight polyethylene fiber sheet, polyarylate fiber sheet, polyketone fiber Examples thereof include a sheet and a polyparaphenylene benzbisoxazole fiber sheet.

In addition, the material for embedding the fiber sheet or the high-strength fiber sheet into a plate shape is not particularly limited as long as the plate shape can be formed by impregnating the fiber sheet or the high-strength fiber sheet with a resin or the like and hardening. Never happen. Examples of the material for impregnation and embedding include materials including resins such as polyester resin, epoxy resin, epoxy resin adhesive, acrylic resin adhesive, and polyamide resin adhesive.
A method for producing such a reinforcing sheet 12 is not particularly limited, but a fiber sheet or a sheet made of high-strength fibers is impregnated with a composition containing the above-described resin having fluidity, and the composition is cured. Can be manufactured.

  On the indoor side of the reinforcing sheet 12, a plywood 14 is fixed as a spacer by, for example, an adhesive or a tucker. The plywood 14 is preferably a plate material having a width equal to or greater than that of, for example, the studs 4 and the vertical support members 5. Further, holes 14a are formed in the plywood 14 at predetermined intervals (for example, 200 mm intervals) in the vertical direction. The reinforcing sheet 12 is fixed by a fixing screw 15 through a washer 16 provided in the hole 14 a of the plywood 14.

  In this case, the fixing screw 15 is screwed and fixed to the interposing column 4 or the vertical receiving member 5 through the reinforcing sheet 12 and the base interior material 11. The hole 14 a formed in the plywood 14 has a cylindrical shape having an inner diameter slightly larger than the outer diameter of the washer 16. In addition, the depth of the hole 14a of the plywood 14 is set to be equal to or greater than the thickness of the washer 16 and the height of the head of the fixing screw 15, and the head of the screwed fixing screw 15 is not higher than the surface of the plywood 14. It is preferable.

Then, a new flat plate-like interior material 18 made of a new gypsum board or the like is attached to the indoor side of the plywood 14, and a fixing screw is provided in a region between the upper and lower sides of the fixing screw 15 that fixes the new interior material 18 to the above-described plywood 14. For example, a countersunk screw 19 is screwed and fixed. In this case, it is assumed that the countersunk screw 19 penetrates the plywood 14 and reaches and fixes the stud 4 or the vertical receiving member 5, and the head of the countersunk screw 19 is screwed into the new interior material 18. Is preferred.
In the present embodiment, the fixing screw 15 and the washer 16 constitute a fixing tool.
Moreover, although it is preferable that wallpaper (not shown; the same applies hereinafter) or the like is fixed to the surface of the new interior material 18 with an adhesive or the like, the wallpaper may be omitted.

  In the earthquake-proof repair wall 1 shown above, the reinforcing sheet 12 and the new interior material 18 are disposed between the surface 3a and the surface 3c of the column 3 in plan view.

Next, the repair method of the earthquake-proof repair wall of the building shown above is demonstrated.
In an existing building, as shown in FIG. 1, an existing interior material 10 is installed on the indoor side of the stud 4 by nailing, screwing, an adhesive, or the like. From this state, the existing interior material 10 is removed.

FIG. 4 is a perspective view for explaining the true-wall seismic retrofit method according to the first embodiment of the present invention.
As shown in FIG. 4, the vertical support member 5 is disposed along the side surface 3 b of the column 3 from the indoor side. The mounting screw 6 is inserted into the lower hole 5 a provided in the vertical support member 5 and screwed into the column 3. Thereby, the vertical support member 5 is fixed to the side surface 3 b of the column 3.

  Next, the interior material 11 for foundation | substrate is installed so that the indoor side surface 4b of the stud 4 and the indoor side surface 5b of the vertical receiving material 5 may be followed. The base interior material 11 is fixed to the spacer 4 and the vertical support member 5 with nails, screws, tuckers, or the like.

  A plate-like reinforcing sheet 12 is fixed to the surface of the interior decorating material 11. An adhesive may be applied and pasted between the base interior material 11 and the reinforcing sheet 12, or may be pasted with a double-sided tape or the like.

The plywood 14 is attached to the indoor side of the reinforcing sheet 12 with an adhesive or a tucker. Holes 14a are formed in the vertical direction of the plywood 14 at predetermined intervals, and fixing screws 15 are screwed into the holes 14a through washers 16. As a result, the reinforcing sheet 12 is fixed to the spacer 4 or the vertical support member 5 with the fixing screw 15. At this time, the positioning of the fixing screw 15 is correctly set by each hole 14a of the plywood 14, and since there is no need for the ink marking, the work of attaching the reinforcing sheet 12 with the fixing screw 15 can be performed accurately in a short time, and the number of steps can be reduced. In addition, the heads of the washer 16 and the fixing screw 15 do not protrude from the hole 14a of the plywood 14, and are kept flush with the surface of the plywood 14.
In addition, it is preferable that the plywood 14 is fixed to the spacer 4 or the vertical receiving member 5 with a washer 16 and a fixing screw 15 at a predetermined interval in the horizontal direction.

  Next, a new interior material 18 such as a plaster board is attached to the indoor side of the plywood 14 and, for example, a countersunk screw 19 is screwed onto the plywood 14, so that the new interior material 18 is made into the plywood 14, the reinforcing sheet 12, and the interior for the foundation. It is fixed to the pillar 3 or the stud 4 via the material 11.

In the seismic retrofit wall 1 of the building thus configured, the reinforcing sheet 12 is provided along the indoor-side surface of the interior material 11 for the foundation, and is attached to the vertical support member 5 fixed to the pillar 3 constituting the housing. It is fixed by a fixing screw 15 and a washer 16. Therefore, the reinforcing sheet 12 can be attached to the base interior material 11 and the vertical support member 5 by providing the vertical support member 5 on the side of the column 3.
Further, since the reinforcing sheet 12 and the new interior material 18 are disposed between the surface 3a and the surface 3c of the column 3 in plan view, the new interior material 18 may protrude more indoors than the column 3. In addition, the reduction of the indoor space before the renovation can be suppressed. Therefore, the reinforcing sheet 12 can be attached while securing the indoor space.

The countersunk screw 19 is screwed into a position between the upper and lower fixing screws 15 on the plywood 14. In addition, since the new interior material 18 is attached to the flat plywood 14 while being in surface contact, the new interior material 18 does not abut against the head of the fixed screw 15 and does not bend or cause unevenness due to unevenness.
Further, the head 19a of the countersunk screw 19 is embedded in the new interior material 18 made of gypsum board and becomes substantially flush with the surface of the interior material 18, so that it does not protrude. Therefore, even if wallpaper or the like is pasted on the surface of the new interior material 18 with an adhesive or the like, unevenness due to the flat head screw 19 does not occur.

  When an earthquake or the like occurs, even if the seismic retrofit wall 1 is shaken by vibration, the reinforcing sheet 12 is pressed by the washer 16 or the plywood 14 and the other surface is pressed against the base interior material 11. ing. Therefore, it is possible to prevent the hole formed by the fixing screw 15 of the reinforcing sheet 12 from relatively moving due to vibration and growing the hole cut and prevent the seismic performance of the reinforcing sheet 12 from being deteriorated.

  In addition, a general aramid fiber sheet that does not contain a resin must be cut with dedicated scissors, but the reinforcing sheet 12 has a plate shape that contains a resin, so a cutter (not shown), scissors (not shown), etc. It can be cut with a general blade and has good workability.

(Modification of the first embodiment)
The modification of 1st embodiment shown above is mainly demonstrated using FIG.
FIG. 5 is a horizontal sectional view showing a seismic retrofit wall structure according to a modification of the first embodiment of the present invention.
In the following modified examples and other embodiments, the same members as those used in the above-described embodiments are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 5, in this modified example, in the seismic retrofit wall 1 </ b> X, a reinforcing sheet 12 is provided on the indoor side of the vertical support member 5, and a new interior material (wall material) 18 is provided on the indoor side of the reinforcing sheet 12. It has been. The reinforcing sheet 12 is fixed to the outdoor side surface of the new interior material 18 with an adhesive or a screw. And the fixing screw 15X is screwed in from the indoor side surface 18a of the new interior material 18. The fixing screw 15 </ b> X penetrates the new interior material 18 and the reinforcing sheet 12 and is screwed into the vertical receiving member 5.

  Thus, after removing the existing interior material 10 once, the structure which directly provides the reinforcement sheet 12 in the vertical receiving material 5 without providing the base interior material 11 may be sufficient. Also in this case, since the reinforcing sheet 12 and the new interior material 18 are disposed between the surfaces 3a and 3c of the column 3 in plan view, the new interior material 18 protrudes more indoors than the column 3. There is nothing to do. Compared with the first embodiment described above, since the base interior material 11 is not provided in the present modification, the amount of protrusion of the new interior material 18 toward the indoor side can be suppressed by the thickness of the base interior material 11. .

(Second embodiment)
The second embodiment described above will be described mainly with reference to FIGS.
FIG. 6 is a horizontal sectional view showing the wall structure of the large wall before renovation. FIG. 7 is a horizontal sectional view showing a large-wall seismic retrofit wall structure according to the second embodiment of the present invention.
As shown in FIG. 6, in the present embodiment, the existing wall K1 of the building before the renovation is the pillar 3 and the stud (not shown; the same applies hereinafter), and the existing interior material 10 attached to the pillar 3 and the stud. And. The building of the present embodiment is a so-called large-walled building in which the existing interior material 10 is arranged along the indoor-side surface 3a of the pillar 3 in plan view.

  As shown in FIG. 7, the seismic retrofit wall 1 </ b> Y is composed of columns 3 and columns, a vertical support member 5 provided on the side surface 3 b of the column 3, and a base interior material 11 provided on the indoor side of the vertical support member 5. And a reinforcing sheet 12 and a new interior material 18 provided on the interior side of the interior material 11 for the foundation. A plywood 14 is provided on the indoor side of the reinforcing sheet 12.

  In the earthquake-proof repair wall 1Y, the new interior material 18 is disposed along the surface 3a of the pillar 3. That is, since the new interior material 18 is arranged on the same plane as the existing interior material 10, it is possible to ensure the same indoor space as before the refurbishment. Further, in the portion A where the new interior material 18 and the existing interior material 10 are joined, there is no step or the like, so a parting material or the like for accommodating the step is unnecessary, and a good fit can be achieved. .

(Modification of the second embodiment)
The modification of 2nd embodiment shown above is mainly demonstrated using FIG.
FIG. 8 is a horizontal sectional view showing a seismic retrofit wall structure according to a modification of the second embodiment of the present invention.
As shown in FIG. 8, in this modification, a sash P <b> 1 and a frame P <b> 2 are provided on the side of the pillar 3. The frame P2 protrudes more indoors than the existing interior material 10 (see FIG. 7; the same applies hereinafter). In general, when the new interior material protrudes to the indoor side from the frame P2, it is necessary to provide a parting material between the frame to prevent the end of the new interior material from being exposed. The material 18 is arranged on the same plane as the existing interior material 10 and does not protrude to the indoor side from the frame P2, so there is no need to provide a parting material or the like.

  The various shapes and combinations of the constituent members shown in the above-described embodiments are merely examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

  Moreover, the earthquake-proof repair wall structure of the building shown above is applicable to a living room as shown in FIG. An opening D is provided in the existing interior material 10 (see FIG. 1; the same applies hereinafter) of the room before renovation. Further, a surrounding edge E is provided at the upper part of the existing interior material 10, and a base board F is provided at the lower part. In the existing interior material 10, an air conditioner G is provided below the peripheral edge E, and an outlet H is provided above the baseboard F. In such a room, when renovation work for improving seismic performance is performed, the peripheral edge E, the skirting board F, the air conditioner G, the outlet H, and the existing interior material 10 are once removed. Then, as shown above, the vertical support member 5, the base interior material 11, the reinforcing sheet 12, and the new interior material 18 are attached, and the peripheral edge E, the baseboard F, the air conditioner G, and the outlet H are attached to their original positions. . At this time, it is preferable that the lengths of the mounting screws (not shown) of the air conditioner G and the outlet H are increased by the thickness of the reinforcing sheet 12 and the new interior material 18.

  Further, when the existing interior material 10 is provided with the outlet H or the like, it is necessary to provide the reinforcing sheet 12 with a through-hole having a size corresponding to the outlet H (not shown; the same applies hereinafter). Since the reinforcing sheet 12 of the present embodiment is a material containing a resin, there is an advantage that the edge of the through hole is not frayed.

  Moreover, the interior material 11 for reinforcement | strength and the reinforcement sheet | seat 12 should just be located in the outdoor side rather than the surface 3a of the pillar 3. FIG. Therefore, the indoor-side surface 18a of the new interior material 18 may protrude more indoors than the surface 3a of the pillar 3, but the interior-side surface 18a of the new interior material 18 as in the first embodiment described above. Is preferably disposed on the outdoor side of the surface 3 a of the column 3. Moreover, the interior material 11 for foundation | substrates may be arrange | positioned in the outdoor side rather than the existing interior material 10, and the indoor side surface 18a of the new interior material 18 may not protrude in the indoor side rather than the surface 3a of the pillar 3. FIG.

  Moreover, in the embodiment shown above, the reinforcing sheet 12 is fixed by the fixing screw 15, but may be fixed by a nail, an adhesive, or the like.

  Further, the new interior material 18 may not be provided. In this case, the fixing screw 15, the washer 16, and the reinforcing sheet 12 may be designed to expose them.

3 ... Pillar (vertical)
4 ... Space pillar (vertical material)
5 ... Vertical receiving material 10 ... Existing interior material (existing wall material)
11 ... Interior material for the base (wall material, base wall material)
12 ... Reinforcing sheet 15 ... Fixing screw (fixing tool)
16 ... Washer 16 (fixing tool)
18 ... New interior materials (wall materials, finished wall materials)

Claims (2)

A vertical member that forms a casing, and an existing wall member fixed to the vertical member, and the existing wall member includes a surface on the indoor side of the vertical member and a surface on the outdoor side of the vertical member in plan view. A seismic retrofit method for Makabe placed between
Removing the existing wall material,
A vertical support material is fixed to the side of the vertical material,
Provide a base wall material and a reinforcing sheet on the indoor side of the vertical receiving material,
Fixing the reinforcing sheet to the vertical support member by a fixture;
A true-wall seismic retrofit method, characterized in that a finishing wall member is provided on the indoor side of the reinforcing sheet and on the outdoor side of the vertical member on the indoor side. A seismic renovation of a large wall having a vertical member forming a box and an existing wall member fixed to the vertical member, wherein the existing wall member is disposed along a room-side surface of the vertical member in plan view A method,
Removing the existing wall material,
A vertical support material is fixed to the side of the vertical material,
Provide a base wall material and a reinforcing sheet on the indoor side of the vertical receiving material,
Fixing the reinforcing sheet to the vertical support member by a fixture;
A large-wall seismic retrofit method, characterized in that a finishing wall member is provided along the room side of the reinforcing sheet and the room side of the vertical member.

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